MotorcycleChains technic treatment is asbelow:

1.Shot peening

2.Bluing

3.Phosphating

4.Nickel-plated

5.Zincing

6.Heat treatment

7.Carburizing

8.Quenching

9.Tempering

10.Oiling

11.Greasing

more info as the following:

1.MotorcycleChains: 25H (04CH), 415, 415H, 420, 420H,428, 428H, 520, 520H, 530, 530H, 05MA, 05MB, 05MC, 06MC

2. O-Ring Motorcycle chains: 428SO,520SO,525SO,530SO

3. Roller chains: A series and B series

4. Silent chains: SC3,SC4,SC5,SC6,SC8,SC10

5. PIV chains: A0,A1,A3,A4,A5,A6

6. O-ring chains and xw-chains: 420,428,520,525,530,630 (RacingChains)

7. Leaf chains: LH series

8. Double pitch conveyor chains with attachments:2040,2050,2060,2080

9. Nickel-plated chains: 25NP,35NP,41NP,40NP,50NP

10. Coupling chains